Breaker and crusher



(No Model.) S 3 Sheets-Sheet 1* r F. L. PRESTON.-

BREAKER AND ORUSHER.

No. 383,986. Patented June 5, 1888.,

INVENTOR 622W WITNESSES BY Clam/w ATTORNEYS.

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BREAKER AND GRUSHER. No. 383,986. Patented June 5', 1888.

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BREAKER AND ORUSHER.

No. 383,986. Patented June 5, 18x88.

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UNITED STATES O PATENT OFFICE.

FREDERICK L. PRESTON, OF DARIEN, WISCONSIN.

BREAKER AND CRUSHER.

SPECIFICATION forming part of Letters Patent No. 383,986, dated June5,1888.

Application filed April 27, 1887. Serial No. 236,320. (No model.)

To aZZ whom it may concern:

Be itknown that I, FREDERICK L. PRESTON, of Darien, in the county ofWalworth and State of Wisconsin, have invented a new and ImprovedBreaker and.Orusher, of which the following is a full, clear, and exactdescription.

The object of my invention is to provide a new and improved machine forbreaking and crushing rocks, ores, 8tc., the machine being simple anddurable in construction, very ef fective in operation, and requiringvery little power.

The invention consists in the construction and arrangement of certainparts and details and combinations of the same, as will be fullydescribed hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a plan view of my improvement. Fig. 2 is a longitudinalsectional elevation of the same on the line as a: of Fig. 1, and Fig. 3is a vertical cross-section of the same on the line 3 y of Fig. 2.

The frame which supports my improved breaker and crusher consists of thecrossbeams A, on which are secured the longitudinal beams A, A, and Asupporting suitable bearings,

carrying the fly-wheels G and the driving-pulley D, connected by a beltwith suitable motive power for operating the breaker and crusher.Between the longitudinal framebeams A A on the shaft Bis formedacrankarm, E, connected by the upwardly-extending pitman F with theupper end of the lever G, bent in such amauner as to extend downward,and carrying on its lower end a plate, G, pro vided at its rear end witha transverse halfround groove, G, fitting upon the cross'plate H,secured by bolts and nuts to the longitudinal beams A A of the frame.The cross plate H forms the fulcrum for said lever G.

In the front edge of the plate G is formed a transverse half-roundgroove, G, in which fits one end of the link-plate I, fitting with itsother end into a transverse half-round groove,

by the arm J extending downward from said plate J and pivoted on the rodJ The front end of the plate J is slightly beveled, and adapted toimpart a forward motion to the lower end of the vibrating-jaw K, held inan inclined position, being pivoted at its upper end to the pin K,supported by the bearings K", held longitudinally adjustable on theupper side beams of the frame L, secured by.suitable means to thelongitudinal beams A A. The bearings K K are adapted to extend downwardand in under the said upper side beams of the frame L, as seen in Fig.3, and are provided with adjustingscrews K K, which enter apertures insaid side beams, whereby, as above intimated, they are renderedlongitudinally adjustable. The jaw K operates between the fixed sideplates, N, secured to the said frame L, and between said fixed platesNis held the fixed jaw O, arrangedin front of the jaw K. SaidplatesN andthe jawsK 0 form a wedge-shaped receptacle,into which the ore, rock, orother material to be crushed is to be placed.

The jaws K O are each provided with corrugations at their inner sides,which face each other and can be formed in a solid plate, or said jawsmay be composed of plates, as shown in the drawings, provided on theirinner faces with sharp edges, thus forming the corrugations. The severalplates of the jaws O are fastenedtogether by bolts or other suitablemeans. The return motion of the jaw K is limited by a cross-bar, P,extending across the rear edge of the jaw K and held adjustably in thelongitudinal groove N, formed in the fixed side plates, N.

The cross-bar P is connected at its outer ends with a U-shaped arm, 1?,through the middle part of which screwsthe screw Q, adapted to turn in asuitable bearing formed on the frame L, said screw Q being provided atits outer end with a hand-wheel, Q, for turning the screw. The U-shapedarm 1? extends around the sides N and the outer edge of the jaw 0. Tothe lower end of the jaw K is secured one end of a rod, R, passing atits other end through the cross'beam A, and carrying on its outer endthe nuts R", which screw against a spring, U, held between said nuts andthe outer face of the cross-beam A. On the rod R is also secured acollar,R,against which rests one end of the spring S, coiled on said rodR, and pressing with its other end against the collar T, secured to therod T, connected with the under side of the plate J. As the plate J isrequired to travel twice the distance as that traveled by the jaw K, thejoint tension of both of the springs SUisutilized to actuate said plate,both being upon the same or a common rod, R.

The cross-plate H can be moved forward, so as to take up any slack orwear at the fulcrumpoint of said plate H and the plate G of the lever G.The means for moving the bar H forward consists of the wedges V passingthrough the lower side bars of the frame L and resting with one edgeagainst said crossbar H. Into the inner ends of the wedges V screws thescrew V, provided with the wheel V which,when turned in one direction,causes the wedges V to move outward, thus pressing against the cross-barH.

The operation is as follows: The breaker and crusher is set in motion byrota-ting the shaft B, whereby the crank-arm E imparts a rocking motionto the lever G by the pitman F, said lever G swinging,with its plate G,on the fixed bar H as a fulcrum. The lever G imparts a rocking motion tothe plate J, secured to the pivoted arm J by the intermediatelink-plate, I, against which said plate J is held by the action of thespring S pressing against the collar T, secured to the rod T fastened onsaid plate J. As the latter has its front end in contact with the lowerfree end of the jaw,said plate J imparts a swinging motion to said jaw Ktoward and from the vertical fixedjaw O. The ore, rocks, or othersimilar material held in the wedged-shaped re ceptacle formed by thefixed plates N, the vertical jaw O, and said vibrating jaw K is pressedby the latter against the fixed jaw O, and is thus broken between thecorrugations of said jaws K 0 near their upper parts. The material nearthe lower parts of said jaw K and the jaw O is crushed as thejaw K inits forward stroke comes nearly in contact at its lower end withthelower end of the fixedjaw O. The jaw K in its return-stroke openssufficiently to permit part of the crushed material to drop out betweenthelower ends of thejaws. When the lever G imparts the forward stroke tothe plate J and the jaw K, then the springs U and S are compressed, sothat they exert a return pressure against said jaw K and the plate Jwhen the lever G is on its returnstroke and does not act on the plate J.The distance which the jaw travels in its returnstroke is regulated bythe cross-bar P, against which rests the rear edge of the jaw K when inits innermost position. The cross-bar P is adjusted forward and backwardby turning the hand-wheel Q so that the screw Q moves the Ushaped arm P,connected with said crossbar P, forward and backward, thus regulatingthe return movement of the jaw K.

The wear on the fixed plate H and the leverplate J can be taken up byturning the wheel V ,so that the screw V forces the wedgesV outward,thus pressing the fixed plate H forward toward the link I, the nuts andbolts fastening said plateH to the beams A having been previouslysufficiently unscrewed to permit said motion of the plate H.

Having thus described myinvention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a breaking and crushing machine, a fixed corrugated j aw, fixedside plates between which said jaw isheld, and an inclined vibrating jawpivoted at its upper end, in combination with a pivoted pushing-plateoperating against the lower end of said vibrating jaw, a bent lever, themain shaft, the pitman connecting said bent lever and main shaft, and anintermediatelink-plate connectingsaid pushingplate with the lower plateof the bent lever, substantially as shown and described.

2. In a breaking and crushing machine, the

combination, with the vibrating jaw K and the side plates, N, betweenwhich said jaw K operates, and having slots N, of the cross-bar P, heldto slide in said slots N, the U-shaped arm P, connected at its outerends with said cross-barR and the screw Q. having the handwheelQ,adapted to move said U-shaped arm forward and back ward,so as toadjust the crossbar P in relation to the jaw K, substantially as shownand described.

3. In a breaking and crushing machine, the vibrating jaw K, theadjustable cross-bar P, adapted to limit the return motion of saidvibrating jaw K, and the swinging plate J, operating against the freeend of said vibratingjaw K, mechanism for vibrating said plate J, in

combination with the rod R, the spring U,held T on said rod R andadapted to be pressed by the forward motion of said crushing-lever K,the

spring S, held on said rod R, and the rod T,

having the collar T, pressing the spring S by the forward motion of saidswinging plate J,

substantially as shown and described.

FREDERICK L. PRESTON.

Witnesses:

DAVID WILLIAMS, BETTIE O. WILLIANS.

